RefCount.h

Go to the documentation of this file.

#ifndef MiscLib__REFCOUNT_HEADER__
#define MiscLib__REFCOUNT_HEADER__
#ifdef DOPARALLEL
#include <omp.h>
#endif
 
namespace MiscLib
{
    class RefCount
    {
    public:
        inline RefCount();
        inline RefCount(const RefCount&);
        inline unsigned int AddRef() const;
        inline unsigned int Release() const;
        inline RefCount& operator=(const RefCount&);
 
    protected:
        virtual ~RefCount();
 
    private:
        mutable unsigned int m_refCount;
    };
 
    RefCount::RefCount() : m_refCount(1)
    {
    }
 
    RefCount::RefCount(const RefCount&) : m_refCount(1)
    {
        // do not copy the ref count!
    }
 
    unsigned int
    RefCount::AddRef() const
    {
        //#pragma omp atomic
        ++m_refCount;
        return m_refCount;
    }
 
    unsigned int
    RefCount::Release() const
    {
        if (m_refCount == 1)
        {
            //#pragma omp critical
            {
                if (m_refCount)
                {
                    m_refCount = 0;
                    delete this;
                }
            }
            return 0;
        }
        //#pragma omp atomic
        --m_refCount;
        return m_refCount;
    }
 
    RefCount&
    RefCount::operator=(const RefCount&)
    {
        // do not copy the ref count!!!
        return *this;
    }
}; // namespace MiscLib
 
#endif